Influenza activity in England, Wales, and Scotland.
D004739:England / Q000453:epidemiology; D005194:Family Practice; D006801:Humans; D009980:Influenza A virus / Q000145:classification*; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology*; D011159:Population Surveillance; D012606:Scotland / Q000453:epidemiology; D012703:Serotyping; D014852:Wales / Q000453:epidemiology